Can anyone confirm or deny that this is a known problem with the current 17BII+? I have one and generally have been happy with the feature set, but every once in a while, the keypad doesn't enter a number I have hit. its really annoying because I can't trust my fingers to rapidly enter a series of numbers to add up, I have to visually confirm every single one I enter to make sure the calculator took all my keystrokes. When it screws up, I notice that no matter how hard I hit the key, it won't enter. I seem to have to clear and start over or hit the back button and re-enter. Seems like a software bug to me, not really sure.
Anyway, just wondering if this is a known issue or not. I'm about ready to throw this one in the trash, drives me crazy.